CN105864125A - Sequential supercharged diesel engine hydraulic device based on waste gas utilization and control method - Google Patents
Sequential supercharged diesel engine hydraulic device based on waste gas utilization and control method Download PDFInfo
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- CN105864125A CN105864125A CN201610206533.4A CN201610206533A CN105864125A CN 105864125 A CN105864125 A CN 105864125A CN 201610206533 A CN201610206533 A CN 201610206533A CN 105864125 A CN105864125 A CN 105864125A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002912 waste gas Substances 0.000 title abstract description 10
- 230000007246 mechanism Effects 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 67
- 239000007789 gas Substances 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
- F15B11/072—Combined pneumatic-hydraulic systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
- F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention provides a sequential supercharged diesel engine hydraulic device based on waste gas utilization and a control method. The sequential supercharged diesel engine hydraulic device comprises a fuel feed pump, a hydraulic pump, a speed reducing mechanism, a controlling supercharger, a controlled supercharger, a first hydraulic motor, a second hydraulic motor and a diesel engine. The fuel feed pump communicates with the hydraulic pump; the hydraulic pump and the speed reducing mechanism are connected and then mounted on the controlling supercharger; the first hydraulic motor is disposed on the controlled supercharger; the second hydraulic motor is mounted at the front end of an auxiliary propulsion force crankshaft of the diesel engine; a first bypass valve and a second bypass valve are arranged in the position of the first hydraulic motor and the position of the second hydraulic motor in a parallel connection mode correspondingly; a control unit is further disposed on a fuel pipe between the hydraulic pump and the first hydraulic motor; and the second hydraulic motor and the second bypass valve are connected in parallel and then connected with the control unit and the hydraulic pump sequentially through pipelines. By means of the sequential supercharged diesel engine hydraulic device based on waste gas utilization and the control method, auxiliary propulsion force can be provided for the diesel engine, and the utilization ratio of waste gas energy is further increased.
Description
Technical field
The present invention relates to a kind of hydraulic means, particularly relate to a kind of sequential supercharged diesel engine hydraulic means based on exhaust gas utilization and control method, be particularly well-suited to sequential supercharged diesel engine controlled boost device handoff procedure and diesel engine 2TC (2 supercharger work) operating mode.
Background technology
Sequential pressurizing (Sequential Turbo Charging) system is called for short STC system, pressure charging system is composed in parallel by 2 or more than 2 turbocharger, along with supercharged diesel engine auxiliary propulsion power rotating speed and the growth of load, put into operation the most in order.When rotating speed or load are less than certain setting value, cut off the air supply of or the waste gas of several booster turbines and compressor, make exhaust gas centralized flows through the booster turbine that work, increase its exhaust gas flow, improve turbine efficiency, it is thus possible to make full use of exhaust energy, improve boost pressure, improve the fuel economy of the low operating mode of diesel engine, dynamic property and emission performance.And when diesel engine auxiliary propulsion power rotating speed or load are higher than certain setting value, make cut-off one or several superchargers put back into, to ensure the high performance of operating condition of diesel engine auxiliary propulsion power.
But in the handoff procedure that sequential supercharged diesel engine is between 1TC (a supercharger job) and 2TC (2 supercharger work), easily occur that controlled boost device responds slow problem, in turn resulting in that throttle flow drastically declines, diesel engine excess air coefficient reduces, burning deteriorates, produces a large amount of soot, increases oil consumption etc..Cause diesel engine performance poor, it may appear that the fluctuation of speed, over-emitting black exhaust, the bad phenomenon such as row's temperature is high, noise is big.Thus, it is desirable to handoff procedure has higher stability, i.e. requires that consecutive pressurization system can quickly, smoothly switch.Apparatus of the present invention can assist it quickly to start when controlled boost device is cut, and preferably solves this problem.
At present in the patent authorized or announce, relate to the little of diesel engine hydraulic device especially sequential supercharged diesel engine, " hydraulic self-adaption air valve correct-timing variable system of diesel engine and control method " such as Application No. " 2010102417764 ", relate to a kind of engine valve timing hydraulic self-adaption variable system, be used for improving air distribution system." hydraulic starting energy storage device of diesel engine " of Application No. " 201110158442.5 ", relates to the device that can automatically carry out hydraulic accumulation energy during the work of a kind of diesel engine.Foregoing invention device all refers to diesel engine hydraulic and utilizes device, but is not the most to utilize exhaust energy to carry out auxiliary diesel machine actuating device, does not the most apply to consecutive pressurization system.
Summary of the invention
The invention aims to providing auxiliary propulsion power simultaneously for diesel engine, it can be assisted when controlled boost device is cut quickly to start and provide a kind of sequential supercharged diesel engine hydraulic means based on exhaust gas utilization and control method.
The object of the present invention is achieved like this: includes oil feed pump, hydraulic pump 2, reducing gear 1, master control supercharger 9, controlled boost device 10, first hydraulic motor 5, second hydraulic motor 7 and diesel engine 8, oil feed pump is connected with hydraulic pump 2, described hydraulic pump 2 is arranged on master control supercharger 9 after being connected with reducing gear 1, first hydraulic motor 5 is arranged on controlled boost device 10, second hydraulic motor 7 is arranged on the auxiliary propulsion power crankshaft front end of diesel engine 8, the first bypass valve 4 and the second bypass valve 6 it is parallel with the most respectively at first hydraulic motor 5 and the second hydraulic motor 7, it is additionally provided with control unit 3 on oil pipe between hydraulic pump 2 and the first hydraulic motor 5, second hydraulic motor 7 is connected with hydraulic pump 2 with control unit 3 by pipeline successively with after the second bypass valve 6 parallel connection.
nullThe control method of a kind of sequential supercharged diesel engine hydraulic means based on exhaust gas utilization: use following hydraulic means: include oil feed pump、Hydraulic pump 2、Reducing gear 1、Master control supercharger 9、Controlled boost device 10、First hydraulic motor 5、Second hydraulic motor 7 and diesel engine 8，Oil feed pump is connected with hydraulic pump 2，Described hydraulic pump 2 is arranged on master control supercharger 9 after being connected with reducing gear 1，First hydraulic motor 5 is arranged on controlled boost device 10，Second hydraulic motor 7 is arranged on the auxiliary propulsion power crankshaft front end of diesel engine 8，The first bypass valve 4 and the second bypass valve 6 it is parallel with the most respectively at first hydraulic motor 5 and the second hydraulic motor 7，It is additionally provided with control unit 3 on oil pipe between hydraulic pump 2 and the first hydraulic motor 5，Second hydraulic motor 7 is connected with control unit 3 and hydraulic pump 2 by pipeline successively with after the second bypass valve 6 parallel connection，Pipeline is sequentially connected with hydraulic pump 2、Control unit 3、First hydraulic motor 5、Second bypass valve 6、Control unit 3、Hydraulic pump 2 constitutes the 1TC performance loop one to the 2TC handoff procedure moment；Pipeline is sequentially connected with hydraulic pump 2, control unit the 3, first bypass valve the 4, second hydraulic motor 7, control unit 3, hydraulic pump 2 constitute the performance loop two in 2TC moment；
(1) when only having the work of master control supercharger:
First bypass valve 4 and the second bypass valve 6 are in closed mode；
(2) during the incision of controlled boost device:
First bypass valve 4 cuts out, and the second bypass valve 6 is opened, and oil plant flows along performance loop one；
(3) during master control supercharger and controlled boost device parallel operation simultaneously:
First bypass valve 4 is opened, and the second bypass valve 6 cuts out, and oil plant flows along performance loop two.
Present invention additionally comprises so some architectural features:
1. pipeline is sequentially connected with hydraulic pump 2, control unit the 3, first hydraulic motor the 5, second bypass valve 6, control unit 3, hydraulic pump 2 constitute the 1TC performance loop one to the 2TC handoff procedure moment；Pipeline is sequentially connected with hydraulic pump 2, control unit the 3, first bypass valve the 4, second hydraulic motor 7, control unit 3, hydraulic pump 2 constitute the performance loop two in 2TC moment.
Compared with prior art, the invention has the beneficial effects as follows: the invention provides the novel Land use systems of a kind of diesel exhaust energy, on the one hand can be that diesel engine provides auxiliary propulsion power, further increase the utilization rate of exhaust energy；On the other hand it can be assisted quickly to start when controlled boost device is cut, effectively alleviate a series of ill effects that controlled boost device operating lag brings.
Accompanying drawing explanation
Fig. 1 is assembly of the invention structural representation.
In figure: 1-reducing gear, 2-hydraulic pump, 3-control unit, 4-the first bypass valve, 5-the first hydraulic motor, 6-the second bypass valve, 7-the second hydraulic motor, 8-diesel engine, 9-master control supercharger, 10-controlled boost device.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of sequential supercharged diesel engine hydraulic means based on exhaust gas utilization, it is characterized in that: include oil feed pump, hydraulic pump 2, reducing gear 1, master control supercharger 9, controlled boost device 10, first hydraulic motor 5, second hydraulic motor 7 and diesel engine 8, oil feed pump is connected with hydraulic pump 2, described hydraulic pump 2 is arranged on master control supercharger 9 after being connected with reducing gear 1, first hydraulic motor 5 is arranged on controlled boost device 10, second hydraulic motor 7 is arranged on the auxiliary propulsion power crankshaft front end of diesel engine 8, the first bypass valve 4 and the second bypass valve 6 it is parallel with the most respectively at first hydraulic motor 5 and the second hydraulic motor 7, it is additionally provided with control unit 3 on oil pipe between hydraulic pump 7 and the first hydraulic motor 5, second hydraulic motor 7 is connected with hydraulic pump 2 by pipeline with after the second bypass valve 6 parallel connection.
When controlled boost device 10 is cut, the first bypass valve 4 cuts out, and the second bypass valve 6 is opened, and auxiliary controlled boost device 10 quickly starts；After controlled boost device 10 fully opens, the first bypass valve 4 is opened, and the second bypass valve 6 cuts out.
In conjunction with Fig. 1, sequential supercharged diesel engine hydraulic system bag reducing gear 1 of the present invention, hydraulic pump 2, control unit 3, bypass valve 4 and 6, hydraulic motor 5 and 7, diesel engine body 8, master control supercharger 9, controlled boost device 10.Hydraulic pump 2 is arranged on master control intensifier driven axle near the outside of turbine by reducing gear 1, first and second hydraulic motors 7 are directly installed on diesel engine auxiliary propulsion power crankshaft front end and controlled boost device power transmission shaft near the outside of compressor, outlet and entrance at two hydraulic motors respectively connect a bypass valve by oil circuit, in hydraulic pump 2 and hydraulic motor intermediate arrangement control unit 3, oil pipe sequentially passes through hydraulic pump 2, control unit 3, hydraulic motor (or bypass valve), hydraulic pump 2 also forms a hydraulic circuit closed, oil feed pump then provides oil plant to make up the every leakage in hydraulic circuit for whole hydraulic circuit.
Hydraulic pump 2-control unit 3-the first hydraulic motor 5-the second bypass valve 6-control unit 3-hydraulic pump 2 constitutes the 1TC performance loop one to the 2TC handoff procedure moment, is wherein high-pressure oil passage before the first hydraulic motor 5, and the first hydraulic motor 5 is low pressure oil way later；Hydraulic pump 2-control unit 3-the first bypass valve 4-the second hydraulic motor 7-control unit 3-hydraulic pump 2 constitutes the performance loop two in 2TC moment, is wherein high-pressure oil passage before the second hydraulic motor 7, and the second hydraulic motor 7 is low pressure oil way later.
Hydraulic pump 2 is coaxially mounted in diesel engine auxiliary propulsion power by reducing gear 1 and sequential pressurizing device intermediate, and diesel engine auxiliary propulsion power exhaust energy utilizes and changed into simultaneously driving compressor and hydraulic system by driving pressure mechanism of qi.Exhaust energy is utilized with oil plant by air inlet simultaneously.So part for exhaust energy just circulates in hydraulic circuit with the form of hydraulic oil.High-pressure oil flow, to the hydraulic motor being arranged on controlled boost device 10, output mechanical energy, can assist it quickly to start when controlled boost device 10 is cut.After controlled boost device 10 completes incision, hydraulic oil through the hydraulic motor of oil pipe to diesel engine auxiliary propulsion power front end, and drives it through bypass valve, and the mechanical energy of generation just can be as diesel engine auxiliary propulsion power.Oil pressure declines afterwards, and low pressure oil is released and flow back fluid press pump 2 from hydraulic motor outlet, proceeds pressurization.So part for exhaust energy just circulates in hydraulic circuit with the form of hydraulic oil.
When diesel engine 1TC, two bypass valves do not work all in opening, hydraulic system.Only master control supercharger 9 works, and waste gas, through the turbine of master control supercharger 9, transfers energy to compressor, compressed air.
Controlled boost device 10 will be cut when, bypass valve 4 cuts out, and bypass valve 6 is opened and is formed a hydraulic circuit one, the a part of hydraulic type of energy of master control supercharger 9 enters loop one and circulates, auxiliary controlled boost device 10 quickly starts, and another part energy continues on through and passed to compressor compressed air by turbine.
After controlled boost device 10 fully opens, bypass valve 4 cuts out, and bypass valve 6 cuts out, form another one hydraulic circuit two, master control supercharger 9, controlled boost device 10 work simultaneously, the energy of two superchargers has quite a few hydraulically to enter loop two to be circulated, and now hydraulic system energy is as diesel engine auxiliary propulsion power.Another part energy continues on through and is passed to compressor compressed air by respective turbine.
Due to compressibility and the time delay of pressure and temp change of hydraulic oil, there is not linear relationship between master control supercharger 9 rotating speed and hydraulic motor rotary speed, cause hydraulic pump 2 outgoing quality flow rate the most not mated with hydraulic motor import mass flowrate.So needing to install a control unit 3 between hydraulic pump 2 and hydraulic motor, to balance closed loop oil plant mass flowrate.
Whole closed loop hydraulic system only just can start when diesel engine enters 2TC, and when 2TC, waste gas part energy is passed to hydraulic system auxiliary controlled boost device and quickly started and as diesel engine auxiliary propulsion power.
Leakage is inevitably produced, so needing to arrange an oil feed pump to make up the loss of hydraulic circuit due to hydraulic pump 2, hydraulic motor, control unit 3 etc..
It addition, two bypass valves are driven by external power source, such as the main feeder of engine room.
Sequential supercharged diesel engine hydraulic system of the present invention, including including diesel engine body, sequential pressurizing device, hydraulic pump 2, reducing gear 1, hydraulic motor, bypass valve, control unit 3, oil feed pump and oil pipe etc..Hydraulic pump 2 is arranged on master control supercharger 9 power transmission shaft near the outside of turbine by reducing gear 1, first hydraulic motor 5 is arranged on controlled boost device power transmission shaft near the outside of compressor, second hydraulic motor 7 is arranged on diesel engine auxiliary propulsion power crankshaft front end, outlet and entrance at the first hydraulic motor 5 connect the first bypass valve 4 by oil circuit, outlet and entrance at the second hydraulic motor 7 connect the second bypass valve 6 by oil circuit, in hydraulic pump 2 and hydraulic motor intermediate arrangement control unit 3, oil pipe sequentially passes through hydraulic pump 2, control unit 3, hydraulic motor (or bypass valve), hydraulic pump 2 also forms a hydraulic circuit closed, oil feed pump then provides oil plant to make up the every leakage in hydraulic circuit for whole hydraulic circuit.Wherein, hydraulic pump 2-control unit 3-the first hydraulic motor 5-the second bypass valve 6-control unit 3-hydraulic pump 2 constitutes the 1TC performance loop one to the 2TC handoff procedure moment, being wherein high-pressure oil passage before the first hydraulic motor 5, the first hydraulic motor 5 is low pressure oil way later；Hydraulic pump 2-control unit 3-the first bypass valve 4-the second hydraulic motor 7-control unit 3-hydraulic pump 2 constitutes the performance loop two in 2TC moment, is wherein high-pressure oil passage before the second hydraulic motor 7, and the second hydraulic motor 7 is low pressure oil way later.
Functions implementing the present invention principle is such that
(1) hydraulic pump 2 is coaxially mounted in diesel engine auxiliary propulsion power by reducing gear 1 and sequential pressurizing device intermediate, and diesel engine auxiliary propulsion power exhaust energy utilizes and changed into simultaneously driving compressor and hydraulic system by driving pressure mechanism of qi.Exhaust energy is utilized with oil plant by air inlet simultaneously.So part for exhaust energy just circulates in hydraulic circuit with the form of hydraulic oil.High-pressure oil flow, to the hydraulic motor being arranged on controlled boost device 10, output mechanical energy, can assist it quickly to start when controlled boost device 10 is cut.After controlled boost device 10 completes incision, hydraulic oil through the hydraulic motor of oil pipe to diesel engine auxiliary propulsion power front end, and drives it through bypass valve, and the mechanical energy of generation just can be as diesel engine auxiliary propulsion power.Oil pressure declines afterwards, and low pressure oil is released and flow back fluid press pump 2 from hydraulic motor outlet, proceeds pressurization.So part for exhaust energy just circulates in hydraulic circuit with the form of hydraulic oil.
(2) 1TC moment, only master control supercharger 9 work, and waste gas, through the turbine of master control supercharger, transfers energy to compressor, compressed air；1TC is to 2TC switching instant, master control supercharger 9 and hydraulic circuit one work simultaneously, the a part of hydraulic type of energy of master control supercharger 9 enters loop one and circulates, and auxiliary controlled boost device 10 quickly starts, and another part energy continues on through and passed to compressor compressed air by turbine；In the 2TC moment, master control supercharger 9, controlled boost device 10 work simultaneously, and the energy of two superchargers has quite a few hydraulically to enter loop two to be circulated, and now hydraulic system energy is as diesel engine auxiliary propulsion power.Another part energy continues on through and is passed to compressor compressed air by respective turbine.
(3) due to compressibility and the time delay of pressure and temp change of hydraulic oil, there is not linear relationship between master control supercharger speed and hydraulic motor rotary speed, cause hydraulic pump 2 outgoing quality flow rate the most not mated with hydraulic motor import mass flowrate.So needing to install a control unit 3 between hydraulic pump 2 and hydraulic motor, to balance closed loop oil plant mass flowrate.
(4) whole closed loop hydraulic system only just can start when diesel engine enters 2TC, and during 2TC, waste gas part energy is passed to hydraulic system auxiliary controlled boost device and quickly started and as diesel engine auxiliary propulsion power.
The present invention relates to sequential supercharged diesel engine hydraulic means based on exhaust gas utilization, be particularly well-suited to sequential supercharged diesel engine controlled boost device handoff procedure and diesel engine 2TC (2 supercharger work) operating mode.Apparatus of the present invention provide the novel Land use systems of a kind of exhaust energy, are providing auxiliary propulsion power simultaneously for diesel engine, it can assisted quickly to start when controlled boost device is cut.
Sequential supercharged diesel engine hydraulic system includes sequential supercharged diesel engine, hydraulic pump 2, reducing gear 1, hydraulic motor, bypass valve, control unit 3, oil feed pump and oil pipe etc..Hydraulic pump 2 is arranged on master control intensifier driven axle near the outside of turbine by reducing gear 1, first hydraulic motor 5 is arranged on controlled boost device power transmission shaft near the outside of compressor, second hydraulic motor 7 is arranged on diesel engine auxiliary propulsion power crankshaft front end, outlet and entrance at the first hydraulic motor 5 connect the first bypass valve 4 by oil circuit, outlet and entrance at the second hydraulic motor 7 connect the second bypass valve 6 by oil circuit, in hydraulic pump 2 and hydraulic motor intermediate arrangement control unit 3, oil pipe sequentially passes through hydraulic pump 2, control unit 3, hydraulic motor (or bypass valve), hydraulic pump 2 also forms a hydraulic circuit closed, oil feed pump then provides oil plant to make up the every leakage in hydraulic circuit for whole hydraulic circuit.
Hydraulic pump 2-control unit 3-the first hydraulic motor 5-the second bypass valve 6-control unit 3-hydraulic pump 2 constitutes the 1TC performance loop one to the 2TC handoff procedure moment, is wherein high-pressure oil passage before the first hydraulic motor 5, and the first hydraulic motor 5 is low pressure oil way later.
Hydraulic pump 2-control unit 3-the first bypass valve 4-the second hydraulic motor 7-control unit 3-hydraulic pump 2 constitutes the performance loop two in 2TC moment, is wherein high-pressure oil passage before the second hydraulic motor 7, and the second hydraulic motor 7 is low pressure oil way later.
Whole hydraulic system can assist it quickly to start when controlled boost device is cut.
In controlled boost device 10 cut process, bypass valve cuts out；Supercharger stable operation to be controlled, bypass valve is opened.
This system changes sequential supercharged diesel engine exhaust energy single utilization mode, driving pressure mechanism of qi change into simultaneously driving compressor and hydraulic system.
Whole closed loop hydraulic system only just can start when diesel engine enters 2TC, and now waste gas part energy is passed to hydraulic system auxiliary controlled boost device and quickly started and as diesel engine auxiliary propulsion power.
Made up by oil feed pump and inevitably produce the loss revealing the hydraulic circuit caused due to hydraulic pump 2, hydraulic motor, control unit 3 etc..
It is an object of the invention to provide a kind of sequential supercharged diesel engine hydraulic means based on exhaust gas utilization and control method.Including sequential supercharged diesel engine, hydraulic pump 2, reducing gear 1, hydraulic motor, bypass valve, control unit 3, oil feed pump and oil pipe etc..Hydraulic pump 2 is arranged on master control intensifier driven axle near the outside of turbine by reducing gear 1, first hydraulic motor 5 is arranged on controlled boost device power transmission shaft near the outside of compressor, second hydraulic motor 7 is arranged on diesel engine auxiliary propulsion power crankshaft front end, outlet and entrance at the first hydraulic motor 5 connect the first bypass valve 4 by oil circuit, outlet and entrance at the second hydraulic motor 7 connect the second bypass valve 6 by oil circuit, in hydraulic pump 2 and hydraulic motor intermediate arrangement control unit 3, oil pipe sequentially passes through hydraulic pump 2, control unit 3, hydraulic motor (or bypass valve), hydraulic pump 2 also forms a hydraulic circuit closed, oil feed pump then provides oil plant to make up the every leakage in hydraulic circuit for whole hydraulic circuit.Wherein, hydraulic pump 2-control unit 3-the first hydraulic motor 5-the second bypass valve 6-control unit 3-hydraulic pump 2 constitutes the 1TC performance loop one to the 2TC handoff procedure moment, being wherein high-pressure oil passage before the first hydraulic motor 5, the first hydraulic motor 5 is low pressure oil way later；Hydraulic pump 2-control unit 3-the first bypass valve 4-the second hydraulic motor 7-control unit 3-hydraulic pump 2 constitutes the performance loop two in 2TC moment, is wherein high-pressure oil passage before the second hydraulic motor 7, and the second hydraulic motor 7 is low pressure oil way later.Apparatus of the present invention provide the novel Land use systems of a kind of exhaust energy, on the one hand it can be assisted quickly to start when controlled boost device is cut, and on the other hand can be that diesel engine provides auxiliary propulsion power when 2TC.
Claims (3)
- null1. a sequential supercharged diesel engine hydraulic means based on exhaust gas utilization，It is characterized in that: include oil feed pump、Hydraulic pump (2)、Reducing gear (1)、Master control supercharger (9)、Controlled boost device (10)、First hydraulic motor (5)、Second hydraulic motor (7) and diesel engine (8)，Oil feed pump is connected with hydraulic pump (2)，Described hydraulic pump (2) is arranged on master control supercharger (9) after being connected with reducing gear (1)，First hydraulic motor (5) is arranged on controlled boost device (10)，Second hydraulic motor (7) is arranged on the auxiliary propulsion power crankshaft front end of diesel engine (8)，First hydraulic motor (5) and the second hydraulic motor (7) place are parallel with the first bypass valve (4) and the second bypass valve (6) the most respectively，Control unit (3) it is additionally provided with on oil pipe between hydraulic pump (2) and the first hydraulic motor (5)，Second hydraulic motor (7) is connected with control unit (3) and hydraulic pump (2) by pipeline successively with after the second bypass valve (6) parallel connection.
- A kind of sequential supercharged diesel engine hydraulic means based on exhaust gas utilization the most according to claim 1, it is characterised in that: pipeline is sequentially connected with hydraulic pump (2), control unit (3), the first hydraulic motor (5), the second bypass valve (6), control unit (3), hydraulic pump (2) the composition 1TC performance loop one to the 2TC handoff procedure moment；Pipeline is sequentially connected with hydraulic pump (2), control unit (3), the first bypass valve (4), the second hydraulic motor (7), control unit (3), the performance loop two in hydraulic pump (2) composition 2TC moment.
- null3. the control method of a sequential supercharged diesel engine hydraulic means based on exhaust gas utilization，It is characterized in that: use following hydraulic means: include oil feed pump、Hydraulic pump (2)、Reducing gear (1)、Master control supercharger (9)、Controlled boost device (10)、First hydraulic motor (5)、Second hydraulic motor (7) and diesel engine (8)，Oil feed pump is connected with hydraulic pump (2)，Described hydraulic pump (2) is arranged on master control supercharger (9) after being connected with reducing gear (1)，First hydraulic motor (5) is arranged on controlled boost device (10)，Second hydraulic motor (7) is arranged on the auxiliary propulsion power crankshaft front end of diesel engine (8)，First hydraulic motor (5) and the second hydraulic motor (7) place are parallel with the first bypass valve (4) and the second bypass valve (6) the most respectively，Control unit (3) it is additionally provided with on oil pipe between hydraulic pump (2) and the first hydraulic motor (5)，Second hydraulic motor (7) is connected with control unit (3) and hydraulic pump (2) by pipeline successively with after the second bypass valve (6) parallel connection，Pipeline is sequentially connected with hydraulic pump (2)、Control unit (3)、First hydraulic motor (5)、Second bypass valve (6)、Control unit (3)、Hydraulic pump (2) constitutes the 1TC performance loop one to the 2TC handoff procedure moment；Pipeline is sequentially connected with hydraulic pump (2), control unit (3), the first bypass valve (4), the second hydraulic motor (7), control unit (3), the performance loop two in hydraulic pump (2) composition 2TC moment；(1) when only having the work of master control supercharger:First bypass valve (4) and the second bypass valve (6) are in closed mode；(2) during the incision of controlled boost device:First bypass valve (4) cuts out, and the second bypass valve (6) is opened, and oil plant flows along performance loop one；(3) during master control supercharger and controlled boost device parallel operation simultaneously:First bypass valve (4) is opened, and the second bypass valve (6) cuts out, and oil plant flows along performance loop two.
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| CN201610206533.4A CN105864125B (en) | 2016-04-06 | 2016-04-06 | A kind of sequential supercharged diesel engine hydraulic means and control method based on exhaust gas utilization |
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| CN201610206533.4A CN105864125B (en) | 2016-04-06 | 2016-04-06 | A kind of sequential supercharged diesel engine hydraulic means and control method based on exhaust gas utilization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080899A (en) * | 2019-04-02 | 2019-08-02 | 中国北方发动机研究所(天津) | A kind of sequence engine with supercharger uplink switching fuel oil control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110080899A (en) * | 2019-04-02 | 2019-08-02 | 中国北方发动机研究所(天津) | A kind of sequence engine with supercharger uplink switching fuel oil control method |
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